Improvement in varnishing-machines



J SPENCER 2 Sheets--Sheet 1. Varnishing-M a hi No. 206,276. Patented July 23,1878.

Fig. 1.

\g/ifnei as: Invenfm r1 01 WM WfiJf gmm/ MW fwcw 2 Sheets--Sheet 2.

J. SPENCER. varnishing-Machine.

Patented July 23,1878.

line X in Fig. 5. -v1ew on line Y in Fig. 2, and Fig. 8 repre- U ITED STATES PATENT OFFICE.

JOHN SPENCER, OF CHICAGO, ILLINOIS.

IMPRQVEME NT IN VARNlSHlNG-MACHINES.

Specification forming part of Iietters Patent No. 206,276, dated July 23, 1878; application filed J une 6, 1878.

To all whom it may concern: 4

Be known that I, .JoHN SpENo-En, of Ohicago, 1n the countyof Cook and State of Illinois, have invented a new and Improved Varnishing-Machine, of which the following is a full, clear, and exact description, reference bein ghad to the accompanying drawings, forming part of this specification, and to the letters of reference marked thereon. v

The nature of myinvention relates to machines for varnishing maps, charts, labels, or other prints on paper or on other flexible material; and it consists in the general construction and arrangement of the machine, and in certain contrivances by which to make the machine perform its functions more automatically, so as to be better adapted for its work,

Fig. 4 represents a section on line V'through one end of the feedingcylinder and its driving gear-wheels. Fig. 5 represents a transverse vertical section on line IV in Fig. 2. Fig. 6 .represents a sectional view taken 011 Fig. 7 represents a sectional sents a sectional view on line Z in Fig. 7.

A is the frame of the machine, suitably shaped for supporting the several operating parts. B is the feeding-cylinder,secured upon a shaft, b, aud mounted in crotched pillowblocks 9 secured upon the framesidcs A. This feeding-cylinder is slotted on its face, and is arranged with gripers for automatically seizing and releasing the sheets ofpaper to be varnished'in the usual manner.

'Upon one end of the shaft 1) is secured a gear-wheel, C, the teethof which engage with the teeth of the'piniou d secured upon the end ot' a driving-shaft, D, which is mounted in suitable ournal-boxes arranged in the top of frame A, and is provided with a fly-wheel and cylinder to be taken up by the gripers, and

thence, after being coated with varnish, to be conducted to the delivery-board in the rea of the machine by endless cords, which arrangement 1 have not shown in the drawing, as I do not claim originality in this device; but

for a better understanding of the operation of the machine I consider it necessary to make mention thereof.

E is the varnishing-roller, the journals of the shaft 0 of which are mounted in standardboxes f, having base-plates, F, and bcin g placed parallel with each other upon the ends of frame A, to have alongitudinal sliding motion'thereon, in which they are steadied by half V-guides a, forming part of the frame A.

Upon the end of this varnishing-roller shaft 0 is secured a gear-wheel, G, the teeth of which engage with the teeth of the gear-wheel O of the feeding-cylinder, so as to receive a rotating motion therefrom in an opposite direction.

H is the varnish-trough, consisting of a plate placed on an incline toward the varnishingroller E, having vertical ends, which partly embrace the ends of said varnishing-roller, and 7 being stiffened bya pendent flange to its front edge. This trough is securedupon the baseplates F by angular brackets 71, and has fitted between its end plates, so as to restupon its inclined bottom, a plate, I, Fig. 5, having flan ges 1 upon its front edge rectangular therewith, while its rear edge is placed parallel and in close proximity with the face of the varnishing-roller, so as to leave anarrow opening between, by which the thickness of the varnish-coating adhering to the roller may be regulated, and which can be adjusted as desired by means of set-screws K, tapped through the front pendent flanges of the trough.

L is a small shaft placed parallel with and close to the varnishing-roller in the bottom of the varnish-trough, and pivoted into the ends of the same. Apulley, m, is mounted upon its end, and is driven by a belt from a pulley,

M, on the varnishing-roller shaft 0. This shaft L carries a series of mixing-wheels, I, which are shaped like propeller-screws, and will agitate the varnish in said trough so that it will be supplied to the roller in a uniform condition.

An intermittent reciprocating motion is imparted to the varnishing-roller and trough by means of two toggle-joints, N N, one at each side of the machine. These toggle-joints are pivoted at one end to the internal faces of the standard-boxes], and their opposite extreme ends are pivoted to plates n, which are adjustably secured upon the top of the front frame ends, while their central joints are each connectedby a bar, 0, with cranks 0 of shaft 1, mounted iirsuitable boxes in the base of the frame A, and having, also, cranks pand v j), the former of which, by a bar, q, connects with the rear arm n of a three-armed tumblershaft, Q, pivoted in a journal-box, t, Fig. 3, behind the gear-wheel O.

The forward arms '2) w of this tumbler-shaft 'Q are at right angles with each other, and

are placed far enough apart for the rim of said gear-wheel C to pass between, each having a side stud or pin, which may carry a small roller to engage with the cam-plates R and It.

The cam-plate R is secured rigidly and permanently against the inner face of the wheel 0, while the cam-plate It is adjustably held against the exterior face of said wheel by a bolt, 1', the head or nut of which is inserted in an annular T-shaped or dovetail groove, 0, formed in the body of said wheel 0.

Vhile said wheel 0 is rotating the camplatcs R and R will alternately move Lthe arms v and w in opposite directions, thereby imparting a rocking motion to the shaft Q, which motion in transmitted to the shaft P, and thence to the toggle-joints N, which, by their motion, will reciprocate the varnishingroller so as to be in close proximity wit-hthe feed-roller during a limited portion of a revolution of the same only, which portion is to be 7 iuaccordance with the sizes of the sheets or the surface to be coated with-varn1sh,and-

which can be regulated by adjusting the camplate B to the requisite point of movement at which the varnishing-roller is to be retracted.

The crank 11, by means of a rod, 8, is connected with the vertical arm of a horizontal lever, S, pivoted at its center against.one side of the frame A, and having pedals formed to its ends, by which the varnishing-roller E can be reciprocated by the operators foot independently of the cam-plates It and R.

J is a shaft pivoted between the plates F, underneath the varnishing-roller E, and havingscrapers j adjustably secured thereto by set-screws, which scrapers are pressed against the face of the varnishing-roller by a weighted arm, Y, secured upon the central part of said shaft J, so as to remove the varnish adhering to the face of said roller wherever desirable, and preventing its coating with "arnish beyond the limit to which said scrapers are adjust-ed. The varnish thus scraped off may be collected in a vessel suspended below each scraper, into which it will drip as it flows down over the scraper.

Heretofore such machines required a cushion to be stretched over the periphery of the feeding-cylinder equal in size to the size of sheet to be varnished, so as to cover the said cushion entirely, and to prevent the varnishin groller from coming in contact therewith, or

with the feeding-cylinder, in order to prevent the back of the sheet being varnished from adhering thereto, vwhile by the herein-described device of imparting automatically an intermittent reciprocating movement to the varnishing-roller, so as to bring and hold the same up to-the feeding-cylinder only whilethe sheet to be varnishedis interposed between said feedin g-cylinder and the varni'shin g-roller, v and by the attachment of the scrapers j for removing the varnish from the roller where a coating with such is not desirable, a cushioning-blanket large enough for the largest sheet which can be varnished in this machine may be stretched permanently over the periphery of the feeding-cylinder,which will an- 'swer for all sizes of prints to be varnished, thus saving the expense of a great variety of cushions and the time for exchanging such cushions with every v'ariationnf the work to be performed. What Iclaim'as my invention is- 1. The combination, with the feeding-cyli'nder, of the varnishing-roller, varnish-trough, the sliding frame, the toggle-joints N, rockshafts 1? Q, connecting-rods 0 q, arms '0 "w, and cams R R, substantially as described and shown.

2. The combination, with thc feeiling cylilider, of the varnishing-roller, varnish-trougl'l, the sliding frame, the toggle-joints N, rockshaft I, connecting-rod 0, bar 8,- and pedal S,

substantially as described and shown.

3. The combination, with the \-'arnishingroller E, of the shaft J having weighted lever Y, and the scrapers j, adjustable upon such shaft, substantially as described and shown.

\ v JOHN SPENCER.

Witnesses:

EMiL H. FnoMnANN, GUs'rAv A. PorPELBAvn. 

